eMedicine Specialties > Emergency Medicine > Ophthalmology
Retinal Artery Occlusion: Follow-up
Updated: Jun 30, 2009
Follow-up
Further Inpatient Care
- Further inpatient care is indicated only if comorbid disease is present.
Further Outpatient Care
- Patients should have serial evaluation of visual acuity by an ophthalmologist.
- An ophthalmologist should perform evaluation for subsequent neovascularization of the iris or retina.
- If HBO is to be used, several treatments may be necessary.
- Patients require urgent follow up for carotid and cardiac evaluation to preclude further central retinal artery occlusion (CRAO) or stroke.
Inpatient & Outpatient Medications
- Inpatient or outpatient medications are indicated only if comorbid disease is present.
Transfer
- Transfer to a hyperbaric facility is necessary if hyperbaric oxygen is to be administered.
Deterrence/Prevention
- Patients should keep their blood pressure under control, lower their cholesterol, avoid IV drugs, and take their medication.
Complications
- Further emboli to brain resulting in CVA
- Further emboli to the same or contralateral eye, resulting in further visual loss
- Progression of temporal arteritis, resulting in loss of vision to the contralateral eye
Prognosis
- Recovery of useful vision is related directly to the rapidity of treatment and presenting visual acuity.
- Studies report that 21% of patients exhibited visual improvement of 6 gradients of visual acuity, 35% exhibited improvement of 3 gradients of visual acuity, while 26% showed no improvement in visual acuity.
- Patients that showed improvement had presenting visual acuity of counting fingers and a mean duration of visual loss of 21.1 hours; those that did not improve had presenting visual acuity of hand movement and a mean duration of visual loss of 58.6 hours.
- The longest delay to treatment that has been associated with significant visual recovery is approximately 72 hours.
- Presence of a cilioretinal artery with foveolar sparing increases improvement of visual acuity.
- Branch retinal artery occlusions (BRAOs) are associated with a higher recovery rate (80% of eyes improve to 20/40 or better) than central retinal artery occlusions (CRAOs).
Patient Education
- Patients must understand that the prognosis for visual recovery is poor and that the visual changes are usually a result of a systemic process that needs treatment.
Miscellaneous
Medicolegal Pitfalls
- Failure to perform a workup for the systemic cause of CRAO, leading to a progression of disease or recurrence of symptoms
The authors and editors of eMedicine gratefully acknowledge the contributions of previous authors, Kilbourn Gordon III, MD, and Enoch Huang, MD, to the development and writing of this article.
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Further Reading
Keywords
retinal artery occlusion, RAO, branch retinal artery occlusion, BRAO, central retinal artery occlusion, CRAO, retinal disease, arterial occlusive disease, ocular stroke, embolism of the retinal artery, retinal artery emboli, loss of vision
Follow-up: Retinal Artery Occlusion